Underground Rome: which sites to choose?
There is no "museum of underground Rome": each site has its own operator, ticket and closing days. Here is how to choose according to what you are looking for:
- Stacked layers (church, house, temple): the Basilica of San Clemente, the most spectacular.
- A real Roman house with frescoes, without the crowds: the Case Romane del Celio.
- Imperial Rome in light and video: the domus of Palazzo Valentini.
- Rome's earliest Christians: the catacombs, south of the city.
- Nero's palace: the Domus Aurea, only from Friday to Sunday.
- A more macabre souvenir: the Capuchin Crypt, near Via Veneto.
All these sites are cool all year round: bring a layer, even in August. Most are also poorly suited to wheelchairs (stairs, narrow passages): check when booking.
San Clemente: the unmissable three levels
Five minutes from the Colosseum, the Basilica of San Clemente stacks a 12th-century church, a 4th-century basilica with medieval frescoes and, at the very bottom, 1st-century Roman buildings with a temple of Mithras. The upper church is free; the excavations cost €10 and should be booked online, as the number of daily entries is limited. Allow an hour. No photos.
The Caelian houses: frescoes and silence
Beneath the Basilica of Santi Giovanni e Paolo, some twenty rooms of homes, shops and baths from the 1st to the 4th century keep their frescoes. Entry is €8 (€6 reduced), the visit takes under an hour and the site stays quiet. Opening days vary by source: confirm them before climbing up. The Caelian also deserves a walk, described in our neighbourhood guide: the Caelian.
Palazzo Valentini: the domus in sound and light
Near Trajan's Column, two aristocratic Roman houses have been uncovered beneath Palazzo Valentini. Glass walkways, projections and narration reconstruct their rooms. The ticket costs €15 (€9 reduced) plus a €1.50 booking fee; the site is closed on Tuesdays and open from 10am to 7pm from March to October (6pm from November to February). Book ahead: entry is by slots of about an hour.
The catacombs: Christian Rome, outside the walls
Three catacombs can be visited along the Via Appia Antica and the Via Ardeatina: San Callisto, San Sebastiano and Domitilla. The ticket costs €10 (€7 reduced), guided tour included, and each closes on a different day: Wednesday at San Callisto, Monday at San Sebastiano, Tuesday at Domitilla. They are outside the centre: allow half a day, together with the Appian Way. You walk through galleries dug into the ground, lined with burial niches.
The Domus Aurea and the Capuchin Crypt
The Domus Aurea is the palace Nero built after the fire of 64, later buried under the Baths of Trajan. It opens only from Friday to Sunday, as a guided tour with virtual reality: €26, booking compulsory on the official ticket office of the Colosseum Archaeological Park. The Capuchin Crypt, at 27 Via Veneto, is a case apart: chapels decorated with the bones of Capuchin friars. The ticket is €10, audio guide included. Best avoided with young, impressionable children.
Summary table
| Site | Full price | Duration | Booking | Closing day(s) |
|---|---|---|---|---|
| San Clemente (excavations) | €10 | 1 h | Advised online | Open every day |
| Case Romane del Celio | €8 | 45 min | Optional | To be confirmed (Tuesday, Thursday?) |
| Palazzo Valentini domus | €15 | 1 h | Recommended | Tuesday |
| Catacombs | €10 | 45 min to 1 h | Depends on the site | Wednesday, Monday or Tuesday |
| Domus Aurea | €26 | about 1 h | Compulsory | Monday to Thursday |
| Capuchin Crypt | €10 | 45 min | No | Open every day |
Prices checked in October 2026; they change: check the official sites.
Two underground itineraries
Day one, Colosseum area: in the morning, San Clemente from 9am, then the Case Romane del Celio on foot (10 minutes); lunch in Monti; in the afternoon, the park of Villa Celimontana for some fresh air.
Day two, centre and outskirts: in the morning, the domus of Palazzo Valentini at 10am, then the neighbouring Trajan's Markets; in the afternoon, the Capuchin Crypt. Book the Domus Aurea on a Friday, Saturday or Sunday, and the catacombs on a day when they are open.
Practical tips
- Book San Clemente, the Domus Aurea and the catacombs ahead in high season.
- Shoes: narrow stairs and uneven floors; avoid smooth soles.
- Photos: forbidden at San Clemente and the Case Romane del Celio; check on site elsewhere.
- Large bags: not allowed at Palazzo Valentini, the Case Romane del Celio and several other sites.
- Rain or heatwave: these sites stay cool and sheltered; see also Rome in the rain.
Going further
For historical context, our guide to Rome in three days places these visits in a full itinerary. For tickets and journeys, read our transport in Rome guide.
